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This map is based on electronic tagging of Atlantic bluefin tuna from 1996 to 2007. Credit: Tag-A-Giant Foundation and Stanford University Because of consumer demand for sashimi (a fresh raw seafood dish), the fishing...

The Line Islands are one of the most remote places in the Pacific Ocean. Credit: Smithsonian Institution Remotely located in the central Pacific Ocean, south of Hawaii, the Line Islands provide a remarkable research...

Rudist clams were major reef builders during the heyday of dinosaurs. Credit: Smithsonian Institution About 100 million years ago , during the heyday of the dinosaurs, reefs were built by mollusks called rudist clams...

Thousands of seamounts—most of them undersea volcanoes—tower above the muddy seafloor. They provide something hard to come by in the deep ocean: a solid surface to cling to. Corals, sponges, and other marine animals...

Garbage patches in the ocean aren't piled-up islands of trash and debris, as is the common perception. But that doesn't mean the tiny, swirling plastic bits are nothing to worry about. The currents of...

John Hildebrand discusses his research at the Scripps Whale Acoustic Lab on the FLIP platform. Marine mammals such as whales, dolphins, and seals have an amazing ability to hold their breaths—sometimes for up to...

Alvin, a human occupied vehicle (HOV), returns to the ship after a deep ocean dive. Credit: NOAA Office of Ocean Exploration Filmmaker and National Geographic Explorer James Cameron on March 25, 2012, became the...

A diver cares for the reef by cleaning up discarded fishing gear and garbage. Credit: Amos Nachoum 2005/Marine Photobank Coral reefs are beautiful, vibrant ecosystems that house roughly one quarter of all marine species...

Ruth Meadows examines specimens as part of her Teacher at Sea experience. NOAA Teacher at Sea Ruth Meadows sorts specimens aboard the NOAA Ship Henry B. Bigelow as part of the Mid-Atlantic Ridge Ecosystem...

Oceanographer Dr. Robert Ballard used Remotely Operated Vehicles like the one pictured above to discover many of the world’s most famous shipwrecks, including the Titanic, the Bismarck, and John F. Kennedy Jr.’s PT 109...

The stunning Smithsonian Community Reef—an accompaniment to the main Hyperbolic Crochet Coral Reef exhibit created by local crafters. Credit: Rebecca Bray/Smithsonian Institution The “Hyperbolic Crochet Coral Reef,” a unique exhibition and thought-provoking fusion of...